Chain wear gauge



FIG. 1 is a right perspective view of the chain wear gauge;

FIG. 2 is a right side view thereof, with the left side view being a mirror image;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof. 

I claim the ornamental design for a chain wear gauge, as shown and described. 